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United States Patent | 3,664,116 |
Emerson , et al. | May 23, 1972 |
A digital clock circuit particularly suited for monolithic integration wherein the counting rate of the clock is variable from a normal to a faster rate in response to the level of a 60 Hz voltage derived from the power line and applied to a single input terminal as a clock reference signal.
Inventors: | Emerson; Paul Gene (Liverpool, NY), Thamhain; Hans Jurgen (Liverpool, NY), McIntosh; Bruce Cromwell (Utica, NY) |
Assignee: |
General Electric Company
( |
Appl. No.: | 05/025,930 |
Filed: | April 6, 1970 |
Current U.S. Class: | 368/87 ; 368/187; 368/200; 968/891; 968/910; 968/961; 968/972 |
Current International Class: | G04G 13/00 (20060101); G04G 13/02 (20060101); G04G 9/00 (20060101); G04G 19/06 (20060101); G04G 9/10 (20060101); G04G 5/00 (20060101); G04G 19/00 (20060101); G04G 5/02 (20060101); G04c 003/00 (); G04c 021/04 (); G04b 019/30 () |
Field of Search: | 58/23,50,38,23A |
791,946 | Aug., 1968 | CA | |||
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